Added policy device id validation similar to the existing DM token validation.

chrome/browser/chromeos/policy/device_local_account_policy_store.cc

Index: chrome/browser/chromeos/policy/device_local_account_policy_store.cc
diff --git a/chrome/browser/chromeos/policy/device_local_account_policy_store.cc b/chrome/browser/chromeos/policy/device_local_account_policy_store.cc
index bcae8d7e0f60db381c38cd55cf73874e683bf5e4..b0a6fcf72e87727199554920b9b3119ec9b94596 100644
--- a/chrome/browser/chromeos/policy/device_local_account_policy_store.cc
+++ b/chrome/browser/chromeos/policy/device_local_account_policy_store.cc
@@ -169,6 +169,9 @@ void DeviceLocalAccountPolicyStore::Validate(
   validator->ValidateDMToken(device_policy_data->request_token(),
                              CloudPolicyValidatorBase::DM_TOKEN_REQUIRED);
 
+  // Validate the device id to match what device policy has.
+  validator->ValidateDeviceId(device_policy_data->device_id());
+
   validator->ValidatePayload();
   policy::BrowserPolicyConnectorChromeOS* connector =
       g_browser_process->platform_part()->browser_policy_connector_chromeos();